Question

define formula unit mass. calculate formula unit mass of NaCl

Answer 1

Answer:

The formula unit mass of a substance is this some of the atomic masses of all atoms in a formula unit of a compound

Explanation:

        sodium atomic mass = 23 u

       chlorine atomic mass = 35.5

   formula unit mass of NaCl =  atomic mass of Na + atomic mass of Cl

                                                  =          23 + 35.5 = 58.5 u

Answer 2

Formula unit mass is a sum of atomic masses of all the terms present in a formula unit of compound. it is calculated by adding the atomic masses of all the atoms present in one formula unit